CN105026999B - Light source device and projector - Google Patents

Abstract

The present invention provides a light source device and a projector capable of acquiring the type of light source. A light source device (5) includes: a light source that emits light; and a light source case (6) that accommodates the light source therein. The housing (6) for the light source has a mounting portion (624) on the surface of the housing (6) for the light source, and the mounting portion (624) can be mounted with a conducting member (64) having conductivity, and the conducting member (64) It is mounted on the mounting part (624) according to the type of the light source. As a result, the type of the light source can be obtained based on the presence or absence of the conductive member electrically connected to the terminal of the device on which the light source device is installed. Therefore, even when the light source device (5) becomes a high-temperature state, it is possible to obtain the type of the light source. category.

Description

Light source device and projector

technical field

The invention relates to a light source device and a projector.

Background technique

Conventionally, there is known a projector that modulates light emitted from a light source device provided inside to form an image corresponding to image information, and projects the image in an enlarged manner onto a projection surface such as a screen. In general, in such a projector, the light source device is configured to be replaceable due to the end of life of an arc tube constituting the light source device or the like. Also, there is known a projector that lights up the arc tubes (discharge lamps) in an appropriate control sequence depending on the type of the arc tubes (discharge lamps) attached thereto (for example, refer to Patent Document 1).

In the projector described in Patent Document 1, a lamp type detector is provided in the lamp unit, and the lamp type detector detects the lamp type and notifies it to a microcomputer of the projector. The microcomputer outputs a lamp type indication signal corresponding to the notified lamp type, and the control circuit of the lamp lighting circuit selects the control sequence corresponding to the input lamp type indication signal from the control sequences prepared in advance corresponding to a plurality of lamp types. Control the sequence, and make the luminescent tube light up according to the control sequence. Accordingly, it is possible to light up the arc tube in an optimal state.

Furthermore, a case is shown in which, in this projector, a protrusion is provided at an arbitrary position of the lamp unit in advance, a switch paired with the protrusion is provided on the main body support side, and a plurality of protrusion positions and a plurality of positions are provided. The position of a switch to obtain the type of lamp.

prior art literature

patent documents

Patent Document 1: Japanese Patent Laid-Open No. 2004-12778

Contents of the invention

The problem to be solved by the invention

However, the discharge lamp at the time of lighting becomes very hot, and the case (housing body) in which this discharge lamp is accommodated also becomes high temperature.

Therefore, as in the projector described in Patent Document 1 above, when the switch is configured to press the switch that is paired with the protrusion provided on the lamp unit by using the protrusion to obtain the lamp type, there is a possibility that the protrusion may be caused by the heat of the storage body. possibility of deformation. In this case, there is a problem that the lamp type (type of arc tube) cannot be obtained appropriately, and the arc tube cannot be turned on in an optimal state.

An object of the present invention is to provide a light source device and a projector capable of acquiring the type of a light source.

means to solve the problem

A light source device according to a first aspect of the present invention is characterized in that it includes: a light source that emits light; and a light source housing that accommodates the light source inside, and the light source housing has a light source on the surface of the light source housing. The mounting part is capable of mounting a conducting member having conductivity, and the conducting member is mounted on the mounting part according to the type of the light source.

In addition, as the light source, a discharge light-emitting type light source lamp such as an ultra-high pressure mercury lamp can be exemplified.

According to the above-mentioned first aspect, as long as the electronic equipment on which the light source device is mounted has a terminal electrically connectable to the conduction member, the terminal can be brought into a conduction state by being connected to the conduction member provided on the light source device, It is distinguished from the case where the terminal is not in the conduction state because no conduction member is provided. Furthermore, since the conduction member is attached according to the type of the light source, it is possible to obtain the type of the light source constituting the light source device by determining whether the terminal is in the conduction state.

In addition, the type of light source is indicated by the presence or absence of a conductive member that contacts the terminal to make the terminal in a conductive state. Therefore, in the case where a conductive member is provided on the light source device, if the If the conductive member is connected, the type of the light source can be obtained. Therefore, it is possible to suppress the difficulty in obtaining the type of the light source due to the influence of the heat generated by the light source device.

In addition, since the type of the light source can be indicated by attaching the conduction member to the mounting portion according to the type of the light source, it is not necessary to separately manufacture a light source case corresponding to the type of the light source. Therefore, it is possible to simply indicate the type of light source.

In the above-mentioned first aspect, it is preferable that the housing for the light source has: a housing main body which houses the light source; The air inside the housing main body is guided, and the mounting portion is provided to the duct member.

Here, when the light source is turned on, the temperature of the light source becomes high. On the other hand, if the high-temperature state of the light source continues, deterioration progresses further. Therefore, it is necessary to cool the light source.

In contrast, by providing a duct member for guiding the air introduced into the case main body on the case main body accommodating the light source, the air can be properly guided to the light source and the light source can be cooled.

In addition, air circulates inside the duct member, whereby the temperature of the duct member is lower than that of the housing body close to the light source. Therefore, by providing the above-mentioned attaching portion on the duct member, deformation of the attaching portion due to heat can be suppressed. Therefore, the conduction member can be stably attached, and the conduction member can be reliably brought into contact with the above-mentioned terminal.

In the above-mentioned first aspect, it is preferable that the duct member has: an introduction port for introducing the air into the inside; a first duct part for guiding the air introduced from the introduction port to the one side in the vertical direction of the housing main body; and a second duct portion that guides the air introduced from the inlet to the other side in the vertical direction of the housing main body. A portion is provided on one of the first duct portion and the second duct portion.

Here, when the light source is turned on, the vertically upper part of the light emitting part where the luminescent material is sealed becomes high in temperature, and thus the vertically upper part needs to be effectively cooled in order to suppress the generation of stones (devitrification).

On the other hand, the first duct part and the second duct part guide the air introduced into the inside through the inlet port to one side and the other side in the vertical direction of the casing body, thereby making it possible to easily circulate air in a certain duct part. The air is guided to the above-mentioned vertical upper part of the light source. Therefore, the light source can be effectively cooled.

Moreover, by providing the above-mentioned attachment part in one of such a 1st duct part and a 2nd duct part, the temperature of this attachment part can be kept low. Therefore, since deformation of the mounting portion due to heat can be suppressed, stable mounting of the conduction member and contact between the conduction member and the above-mentioned terminal can be reliably performed.

In the above-mentioned first aspect, it is preferable that the attachment portion is provided at a position on the inlet side of the duct member.

In addition, regarding the position on the inlet port side on the duct member, for example, the following position can be cited: the case where the light source housing has an outlet for discharging the air that cools the light source after being introduced into the housing main body through the duct member. Down, on the side of the inlet than the discharge port.

According to the above-mentioned first aspect, since relatively low-temperature air flows through the portion of the duct member where the mounting portion is located, the temperature of the mounting portion can be reliably kept low. Therefore, deformation of the mounting portion due to heat can be reliably suppressed, and stable mounting of the conduction member and contact between the conduction member and the terminal can be reliably performed.

In the above-mentioned first aspect, it is preferable that the conduction member is a plate-shaped metal member.

According to the above-mentioned first aspect, since the conduction member is made of metal, deformation of the conduction member due to heat can be suppressed. In addition, since the conduction member has a plate shape, it is possible to suppress an increase in size of the light source device due to the provision of the conduction member.

In the above-mentioned first aspect, it is preferable that the light source case includes a connection portion that supplies the supplied electric power to the light source, and that the connection portion is disposed on the bottom surface of the light source case. part, and any position of the mounting part on the opposite side to the light emitting direction from the light source housing, and the side parts are respectively connected to the light source housing on the light source housing. The bottom part intersects with the front part from which light is emitted.

Furthermore, a connector that is provided on an electronic device connected to a light source device and connected to a connection terminal that supplies power to the light source device can be exemplified.

Here, the following first to third mounting methods can be considered when inserting and mounting the light source device into a light source housing portion of an electronic device (for example, a projector).

The first mounting method is a mounting method in which the light source device is inserted from the bottom surface side of the light source housing in a direction perpendicular to the light emitting direction.

The second mounting method is a mounting method in which the light source device is inserted in a direction perpendicular to the light emission direction from the side surface intersecting the bottom surface.

The third mounting method is a mounting method in which the light source device is inserted from the front side along the light emitting direction.

Moreover, if the connection part is provided on the bottom surface of the housing for the light source, in the case of applying any one of the above-mentioned first to third mounting methods, the connection part can be connected to the bottom surface of the light source housing part. In addition, the connection between the above-mentioned connection part and the connection terminal can be realized simultaneously with the installation of the light source device to the light source housing part.

In addition, if the connection part is provided on the side part that intersects the front part and the bottom part, respectively, on the side opposite to the direction in which the light is emitted from the mounting part, when the first mounting method is applied, the The same effect as when the connecting portion is provided on the bottom portion can be obtained.

Furthermore, by providing the above-mentioned mounting portion in the light source devices to which the first to third mounting methods are applied, it is possible to reliably acquire the type of the light source device mounted by any one of the mounting methods.

A projector according to a second aspect of the present invention includes: the light source device; a light modulation device that modulates the light emitted from the light source device; and a projection optical device that modulates light emitted by the light modulation device. The light after projection is projected; the exterior casing accommodates the light source device, the light modulation device, and the projection optical device inside; the light source storage unit is provided in the exterior casing and accommodates it freely. the light source device; and a terminal part disposed in the exterior case at a position corresponding to the mounting part of the light source device accommodated in the light source housing part, and connected to the mounting part mounted on the mounting part. The conduction member electrically contacts and conducts.

According to the second aspect, since the light source device and the terminal portion electrically contact and conduction with the conduction member attachable to the light source device are provided, the same effects as those of the light source device described above can be achieved.

In the above-mentioned second aspect, it is preferable that the terminal part has a plurality of spring switches, and the plurality of spring switches are in contact with the conduction member to conduct with each other.

According to the above-mentioned second aspect, the spring switch can be pressed against the mounting portion of the light source device accommodated in the light source housing portion by utilizing the elastic force (urging force) of each spring switch. Therefore, the conduction state and the non-conduction state of the plurality of spring switches can be reliably switched according to the presence or absence of the conduction member, and thus the type of the light source can be acquired reliably and appropriately.

In the above-mentioned second aspect, it is preferable that the plurality of spring switches include at least three spring switches, and that the conducting member contacts two of the at least three spring switches so that the two springs The switch is turned on.

In the above-mentioned second mode, for example, the conduction member conducts two spring switches among the three spring switches, and by making the conduction state and non-conduction state of each spring switch correspond to the type of light source, it is possible to increase the number of passes through the setting. The category of the light source represented by the on-part. Therefore, it is possible to represent the types of a plurality of light sources with a simple structure.

In the above-mentioned second aspect, it is preferable that the projector includes: a determination unit that determines the type of the light source based on the conduction state of the terminal unit; Judgment results to control the action of the projector.

According to the above-mentioned second aspect, the determination unit determines the type of the light source based on the conduction state of the terminal portion, and the operation control unit controls the operation of the projector based on the determination result of the determination unit. As a result, the light source can be turned on in a lighting manner corresponding to the type of the light source, and when a cooling device for cooling the light source device is provided, the driving state of the cooling device can be controlled. Therefore, the light source can be turned on with an appropriate lighting method, the turn-on startability of the light source can be improved, and the life of the light source can be extended.

Description of drawings

FIG. 1 is a schematic diagram showing the configuration of a projector according to a first embodiment of the present invention.

2 is a cross-sectional view showing a light source and a main reflector of the first embodiment.

FIG. 3 is a perspective view showing the light source device of the first embodiment.

FIG. 4 is a side view showing the light source device of the first embodiment.

FIG. 5 is a perspective view showing the light source device of the first embodiment.

FIG. 6 is a plan view showing the light source housing portion of the first embodiment.

FIG. 7 is a block diagram showing the configuration of a power supply unit and a control unit in the first embodiment.

8 is a diagram showing a spring switch on a substrate included in a projector according to a second embodiment of the present invention.

detailed description

[the first embodiment]

Hereinafter, a first embodiment of the present invention will be described based on the drawings.

〔Outline structure of a projector〕

FIG. 1 is a schematic diagram showing the configuration of a projector 1 according to the present embodiment.

Projector 1 of the present embodiment is an image display device that modulates light emitted from light source device 5 provided inside to form an image corresponding to image information, and projects the image on a projection surface such as a screen (omitted). icon) on. As shown in FIG. 1 , the projector 1 includes: an exterior case 2 having a substantially rectangular shape in plan view and constituting the exterior of the projector 1 ; and a device main body 3 housed and arranged in the exterior case 2 .

[Structure of the exterior case]

The exterior case 2 forms a top surface (not shown), a front surface 2B, a rear surface 2C, a left side 2D, a right side 2E, and a bottom surface (not shown) of the projector 1. Although not shown, the bottom surface Features multiple legs. Furthermore, by arranging the bottom surface to be oriented downward in the vertical direction, the projector 1 is placed in an upright posture, and by arranging the bottom surface in the upside-down direction opposite to the upright posture, the projector 1 is placed in a vertically upward direction. Come into an inverted position.

In addition, the exterior case 2 has a light source accommodating portion 21 that detachably accommodates a light source device 5 (see FIG. 6 ), which will be described later. The structure of the light source housing portion 21 will be described in detail later.

[Structure of the main body of the device]

The device main body 3 includes an optical unit 4 and a cooling device 7 . In addition, although not shown in FIG. 1 , the apparatus main body 3 includes: a power supply unit 8 that supplies power to each component of the projector 1; and a control unit 9 that controls the operation of the projector 1 (refer to FIG. 7).

The cooling device 7 has a plurality of fans 71 to 73 , and cools the optical unit 4 , the power supply unit 8 , and the control unit 9 by sending air introduced from the outside of the exterior case 2 . Among these fans 71 to 73, the fan 71 is, for example, a Sirocco fan that introduces external air from an air inlet (not shown) formed in the exterior case 2, and sends the air to an electro-optic fan described later. device 44.

In addition, the fan 72 arranged on the side of the light source device 5 described later and on the rear surface 2C side is constituted by, for example, a sirocco fan, and sucks air in the exterior case 2 and sends it to the light source device 5 . In addition, the fan 73 is constituted by, for example, an axial fan, sucks the air that has cooled the light source device 5 and other cooling objects, and discharges it to the front 2B side, and then discharges the air through an exhaust port 2B1 formed on the front 2B. To the outside of the outer shell 2. Moreover, the fan 72 may also be an axial fan, and the fan 73 may also be a Sirocco fan. In addition, the exhaust port 2B1 may be formed on any surface of the exterior case 2 .

[Structure of Optical Unit]

The optical unit 4 forms an image corresponding to image information and projects the image under the control of the control unit 9 . The optical unit 4 includes a light source device 5 , an illumination device 41 , a color separation device 42 , a relay device 43 , an electro-optical device 44 , a projection optical device 45 , and an optical component housing 46 .

FIG. 2 is a cross-sectional view showing the light source 51 and the main mirror 52 .

The light source device 5 includes a light source 51 as a light source lamp, a main reflector 52 attached to the light source 51 , a collimator lens 53 , and a light source case 6 in which the above-mentioned components are housed. Furthermore, the structure of the light source housing 6 will be described in detail later.

As shown in Figure 2, the light source 51 is equipped with a luminous tube 511, and the luminous tube 511 has: a luminous part 5111 that bulges into a substantially spherical shape; The seal portion on the 52 side is labeled 5112, and the seal portion on the side opposite to the main reflector 52 is labeled 5113), and the pair of seal portions 5112, 5113 are drawn from both ends of the light-emitting portion 5111 along the extending in directions separate from each other.

A pair of electrodes E (E1, E2) made of tungsten are arranged inside the light emitting part 5111, and a discharge space S is formed between the pair of electrodes E1, E2. and halogen luminescent substances.

Molybdenum-made metal foils 512, 513 are inserted inside a pair of sealing parts 5112, 5113, and the metal foils 512, 513 are electrically connected to electrodes E1, E2, respectively. The end of one side is sealed with a glass material or the like. Electrode leads 514 and 515 extending to the outside of the light emitting tube 511 are respectively connected to the metal foils 512 and 513. When a voltage is applied to the electrode leads 514 and 515, the light emitting part 5111 emits light.

A sub-reflector 54 for reflecting light emitted from the light-emitting portion 5111 toward the sealing portion 5113 toward the main reflector 52 is fixed to the light-emitting tube 511 . The sub-reflector 54 includes: a substantially cylindrical head portion 541 having an opening 5411 through which the sealing portion 5113 is inserted; and a reflection portion 542 having a concavely curved reflecting surface extending from the head portion 541 5421.

The main reflector 52 reflects the incident light and converges it at the focal point on the illumination optical axis A, and the main reflector 52 is fixed to the sealing portion 5112 with an adhesive B. The main reflection mirror 52 includes: a substantially cylindrical head portion 521 having an opening 5211 through which the sealing portion 5112 is inserted; and a reflection portion 522 having a concavely curved reflection surface extending from the head portion 521 5221. In addition, in the present embodiment, the reflection unit 522 is formed as a cold mirror that reflects visible light and transmits infrared rays and ultraviolet rays.

The trigger (Trigger) wire 55 is an auxiliary starting wire for improving the lighting performance of the luminous tube 511, one end of which is coiled around the sealing part 5112, and the center is arranged along the light emitting part 5111, the secondary reflector 54 and the sealing part 5113 On their outer sides, the other end is connected to an electrode lead-out wire 515 via a connecting portion 516 . One end of the lead wire 517 is connected to the connecting portion 516, and the lead wire 517 extends to the outside of the main reflector 52 through the through hole 5222 formed near the outer edge of the reflection portion 522, and the other end of the lead wire 517 is connected to the counter electrode. The lead-out line 515 is connected to the terminal 56 to which a voltage is applied from the trigger line 55 .

Returning to FIG. 1 , the illuminating device 41 uniformly illuminates the image forming area of each liquid crystal panel 442 described later using the light incident from the light source device 5, and includes two lens arrays 411, 412, a polarization conversion element 413, and a compound lens. 414.

The dichroic device 42 separates the light incident from the illuminating device 41 into red, green, and blue color lights, and includes dichroic mirrors 421 , 422 and a reflection mirror 423 .

The relay device 43 is provided on the optical path of the red light longer than the optical paths of other color lights to suppress light loss. The relay device 43 includes an incident-side lens 431 , a relay lens 433 , and reflectors 432 and 434 .

The electro-optic device 44 modulates the incident red, green, and blue colored lights for each colored light, and then synthesizes the respective colored lights to form an image. The electro-optical device 44 is provided with: an objective lens 441; three liquid crystal panels 442 (the symbols for the liquid crystal panels for red light, green light, and blue light are respectively 442R, 442G, and 442B) as light modulation devices; three incident side A polarizing plate 443, three viewing angle compensating plates 444, and three output side polarizing plates 445; and a cross dichroic prism 446 as a color synthesis device.

The projection optical device 45 is configured as a lens group in which a plurality of lenses are accommodated in a cylindrical lens barrel, and is used to enlarge and project an image formed by the electro-optical device 44 onto a projection surface.

The optical component case 46 is a substantially L-shaped case in plan view, and accommodates the light source device 5 and the respective devices 41 to 44 at predetermined positions with respect to the illumination optical axis A set inside. A supporting member (not shown) for supporting the projection optical device 45 is connected to one end side (the front 2B side of the right side 2E) of the optical member housing 46 . In addition, an opening for accommodating each optical component is formed in an upper portion of the optical component case 46 , and the opening is closed by a cover.

In the optical unit 4, according to the aforementioned configuration, the illumination device 41 makes the illuminance in the illumination area uniform for the light emitted from the light source device 5, and the light emitted from the light source device 5 is separated by the color separation device 42. Red, green and blue lights. After being modulated by the corresponding liquid crystal panel 442 , the above-mentioned colored lights are synthesized in the cross dichroic prism 446 , and then projected by the projection optical device 45 .

[Structure of the housing for the light source]

FIG. 3 is a perspective view showing the light source device 5 . In the following description and drawings, the Z direction represents the traveling direction of light emitted from the light source device 5 , and the X direction and Y direction represent directions perpendicular to the Z direction and perpendicular to each other. In addition, when the Z direction is along the horizontal direction and the first face portion 611A described later is arranged facing upward (in the case where the light source device 5 is arranged in a normal arrangement state described later), the light source device 5 is oriented vertically. The upward direction is referred to as the Y direction, and the direction from the left to the right as viewed from the Z direction side is referred to as the X direction.

As described above, the light source device 5 is configured as a unit including the light source 51 , the main reflector 52 , and the collimator lens 53 ; and the light source case 6 that houses the above-mentioned elements therein.

As shown in FIG. 3 , the housing 6 for the light source includes: a housing main body 61 formed of a synthetic resin containing glass filler; . Then, the top surface portion 6A, the side portions 6B, 6D, the bottom portion 6C, the front portion 6E, and the rear portion 6F of the light source housing 6 are formed by these members.

[Structure of the main body of the housing]

The housing main body 61 has a first main body portion 611 and a second main body portion 612 , and these parts are combined to accommodate the light source 51 and the main reflector 52 inside.

The first main body portion 611 is located on the light traveling direction side (Z direction side) with respect to the light source 51 and the main reflector 52 , and covers the light emitting portion 5111 and the sealing portion 5113 of the light source 51 . An opening (not shown) through which light emitted from the light source 51 and the main reflection mirror 52 passes is formed in the first main body portion 611 . A collimator lens 53 is fitted into the opening, and a plate spring 63 fixing the collimator lens 53 is attached to an end of the first main body 611 on the light traveling direction side (Z direction side).

Such a 1st main body part 611 has the 1st surface part 611A, the 2nd surface part 611B, the 3rd surface part 611C, the 4th surface part 611D, and the 5th surface part 611E. The 1st surface part 611A and the 3rd surface part 611C are the surface of the Y direction side and the side opposite to a Y direction, respectively, and comprise the said top surface part 6A and the said bottom surface part 6C, respectively. The second surface portion 611B and the fourth surface portion 611D are surfaces on the X direction side and the opposite side to the X direction, respectively, and constitute the side surface portion 6B and the side surface portion 6D, respectively. In addition, the fifth surface portion 611E is a surface on the Z direction side, and constitutes the aforementioned front portion 6E from which light is emitted.

A first gripping portion 6111 for gripping the light source device 5 is provided on the first surface portion 611A.

The second surface 611B is a side surface that intersects the first surface 611A and the fifth surface 611E on which the leaf spring 63 is attached, and is provided together with the fourth surface 611D when the first surface 611A is arranged to face upward or downward. Along the vertical face. Although not shown, a slit is formed in the second surface portion 611B for introducing air for cooling the end portion of the light source 51 on the sealing portion 5113 side into the first main body portion 611 . Moreover, the duct member 62 mentioned later is attached to the 2nd surface part 611B.

FIG. 4 is a side view of the light source device 5 viewed from the fourth surface 611D side (that is, the side opposite to the second surface 611B).

The 4th surface part 611D is located in the side opposite to the 2nd surface part 611B to which the duct member 62 was attached. The fourth surface portion 611D is formed with a discharge port 613 for discharging the air introduced into the case body 61 by the duct member 62 to cool the arc tube 511 in the case body 61 . The formation position of the discharge port 613 is a position corresponding to the arrangement position of the duct member 62 on the second surface portion 611B of the fourth surface portion 611D, and is the sealing portion 5113 of the arc tube 511 accommodated in the light source case 6 . the corresponding location. That is, in the light source housing 6 , the duct member 62 is attached to a position opposite to the discharge port 613 .

As shown in FIGS. 3 and 4 , the second main body portion 612 is located on the side opposite to the light traveling direction (the side opposite to the Z direction) with respect to the light source 51 and the main reflector 52, and covers the side of the main reflector 52. The surface on the side opposite to the reflective surface 5221 .

The 1st surface part 612A (surface on the Y direction side) of the 2nd main body part 612 comprises 6 A of top surface parts together with 611 A of 1st surface parts. The second grip portion 6121 is provided on the first face portion 612A, and the second grip portion 6121 is gripped by the user together with the first grip portion 6111 .

As shown in FIG. 3 , the second surface portion 612B (surface on the X direction side) of the second main body portion 612 constitutes the side surface portion 6B together with the second surface portion 611B. An opening 6122 for introducing air for cooling the main mirror 52 into the second main body 612 is formed in the second surface portion 612B. In addition, a connector 6123 is provided as a connection portion on the second surface portion 612B, and the connector 6123 is connected to the terminal 56 and the electrode lead wire 514 . The connector 6123 is located on the opposite side to the Z direction (direction in which light is emitted from the light source device 5 ) than the mounting portion 624 .

As shown in FIG. 4, the 4th surface part 612D (surface on the side opposite to the X direction) of the 2nd main body part 612 comprises the side part 6D together with the 4th surface part 611D. An opening 6124 is formed in the fourth surface 612D for discharging the air introduced into the second main body 612 from the opening 6122 to cool the back side of the main reflection mirror 52 to the second main body. Section 612 Outside.

[Structure of pipe parts]

As shown in FIG. 3 , the duct member 62 is formed in a substantially U-shape laterally viewed from the light traveling direction side (Z direction side), and is attached so as to straddle the second surface portion 611B, the first surface portion 611A, and the third surface portion. 611C is a part of the second face 611B side. As described above, the second face 611B is arranged in the state of the light source device 5 facing upward on the first face 611A, 612A (the state shown in FIG. 3. configuration state) along the vertical plane. The duct member 62 has an inlet 621 , a first duct part 622 , and a second duct part 623 .

In a normal arrangement state, the introduction port 621 is formed in a rectangular shape substantially at the center in the vertical direction of the duct member 62 . The inlet 621 introduces the air blown out from the fan 72 into the duct member 62 .

The first duct part 622 and the second duct part 623 guide the air introduced from the inlet 621 to the first surface part 611A side of the first main body part 611 and the third surface part 611C on the side opposite to the first surface part 611A (with the third part 611C). The side opposite to the Y direction) side.

Specifically, in the normal arrangement state, the first duct portion 622 extends from the inlet 621 vertically upward (side in the Y direction), and bends toward the second surface portion 611B (side opposite to the X direction). . In addition, one end of the first duct portion 622 is connected to the second surface portion 611B so as to communicate with an upper side opening (not shown) formed in the second surface portion 611B. The air flowing through the first duct portion 622 is introduced into the first main body portion 611 through the upper opening, and is mainly sent toward the light emitting portion 5111 .

In addition, in the normal arrangement state, the second duct portion 623 extends from the inlet 621 to the lower side in the vertical direction (the side opposite to the Y direction), and extends toward the second surface portion 611B (a side opposite to the X direction). side) curved. And, one end portion of the second duct portion 623 is connected to the second face portion 611B so as to communicate with a lower side opening (not shown) formed in the second face portion 611B. The air flowing through the second duct portion 623 is introduced into the first main body portion 611 through the lower side opening, and is sent mainly toward the light emitting portion 5111 .

Here, although illustration is omitted, the duct member 62 has a flow dividing member at a position corresponding to the inlet port 621 . The flow distribution member is a plate-shaped member configured such that one end is rotatably supported by the first main body portion 611 and the duct member 62 , and the other end is rotatable around the rotation axis of the one end by its own weight. A hole penetrating through the flow distribution member is formed in the flow distribution member.

The other end of the distribution member rotates by its own weight, whereby the flow direction of a part of the air introduced into the duct member 62 is changed to be vertically upward, and is guided to the first duct part 622 and the second duct part 623 In , the duct portion is positioned vertically upward in accordance with the posture of the projector 1 . That is, the flow distribution member also functions as a member for switching the air flow path. On the other hand, part of the air introduced into the duct member 62 is guided to the duct portion located vertically downward through the hole portion formed in the flow distribution member.

In addition, in the present embodiment, the size and number of holes in the plate member are set such that the flow rate of air flowing into the duct portion located vertically above is greater than the flow rate of air flowing into the duct portion located vertically below. The traffic is large.

[Flow path of the air introduced into the piping components]

The air introduced into the duct member 62 through the inlet 621 is divided into the following first to third flow paths and circulated.

The first flow path is a flow path in which part of the air introduced through the inlet 621 flows into the first main body portion 611 through the slit formed in the second surface portion 611B, toward the region on the sealing portion 5113 side of the light source 51 , and The area is cooled.

The second flow path is a flow path in which a part of the air introduced through the introduction port 621 is guided by the flow dividing member to flow in the duct part located vertically above, and flows into the first main body part through the opening communicating with the duct part. 611 , toward the light emitting portion 5111 of the light source 51 , and the light emitting portion 5111 is cooled from above.

The third flow path is a flow path in which a part of the air introduced through the inlet 621 passes through the hole of the flow distribution member, circulates in the duct portion located vertically below, and flows into the first flow path through the opening communicated with the duct portion. Inside the body part 611 , the light emitting part 5111 of the light source 51 faces, and the light emitting part 5111 is cooled from below.

Here, the flow rate of the air flowing through the second flow path is greater than the flow rate of the air flowing through the third flow path by means of the flow dividing member, so that the temperature of the light emitting part 5111 can be effectively treated by the lead that is higher in temperature than the lower part in the vertical direction. Cool straight up. In addition, since the lower portion in the vertical direction is also cooled, it is possible to efficiently cool the entire light emitting portion 5111 .

With such a configuration, the light source 51 can be effectively cooled regardless of whether the projector 1 is in an upright position or an upside-down position.

[Structure of the mounting part]

FIG. 5 is a perspective view of the light source device 5 in the normal arrangement state viewed from the lower side (the side opposite to the Y direction).

As shown in FIG. 5 , the duct member 62 is provided with an attachment portion 624 capable of attaching the substantially U-shaped conduction member 64 with screws SC. Specifically, a protruding portion 625 is provided at the end of the second duct portion 623 on the side opposite to the first duct portion 622 (end portion on the side opposite to the Y direction), and the protruding portion 625 extends from the end The part protrudes outward (X direction side). The mounting portion 624 is provided on the surface of the protruding portion 625 on the side opposite to the first duct portion 622 (the surface on the side opposite to the Y direction), and is formed flat.

The installation position of such an attachment portion 624 is a relatively low temperature position on the duct member 62 . Specifically, the mounting portion 624 is provided at a position on the inlet 621 side of the duct member 62 (a position close to the inlet 621 ). In other words, the mounting portion 624 is provided on the opposite side of the side surface 6D (fourth surface 611D) on which the discharge port 613 (see FIG. The outlet 613 is located close to the inlet 621 . And, by making the relatively low-temperature air introduced into the duct member 62 from the outside of the light source housing 6 circulate in the duct member 62, the temperature of the portion corresponding to the mounting portion 624 of the duct member 62 can be maintained at a high temperature. As a result, the temperature of the mounting portion 624 can be kept low.

[Structure of conduction member]

The conduction member 64 is a plate-shaped metal member serving as a terminal that contacts a spring switch 2132 (see FIG. 6 ), which will be described later. The conduction member 64 is attached to the attachment portion 624 according to the type of the light source 51 . Specifically, when one of the two light sources having different driving methods is used for the light source device 5, the conduction member 64 is attached to the mounting portion 624, and when the other light source is used, The conducting member 64 is not attached to the attaching portion 624 .

In addition, as shown in FIG. 5 , a rotation restricting portion 6241 protruding to the side opposite to the Y direction is provided on the attachment portion 624 . The rotation restricting part 6241 fits into the recessed part 641 provided in the conduction member 64, and the rotation when the conduction member 64 is screwed is restricted.

[Structure of light source storage unit]

FIG. 6 is a plan view showing the light source housing portion 21 . Also, the dashed-two dotted line in FIG. 6 shows the appearance of the light source device 5 when stored in the light source housing portion 21 and the appearance of the light source 51 and the main reflector 52 constituting the light source device 5 .

As described above, the light source housing portion 21 is a portion where the light source device 5 is housed in the exterior case 2 . As shown in FIG. 6 , the light source housing portion 21 has a side wall 211 , a connector 212 and a terminal portion 213 .

The side wall 211 stands up from the inner surface of the exterior case 2 . The side wall 211 not only functions as a guide for guiding the light source device 5 to the light source housing portion 21 , but also has a function of restricting the swing of the light source device 5 housed. Although not shown in the figure, openings are formed at a plurality of places on the side wall 211 through which air for cooling the light source device 5 flows. For example, an opening through which air introduced into the duct member 62 through the inlet 621 passes is formed at a position corresponding to the outlet of the fan 72 .

In the light source housing portion 21 , the connector 212 is provided at a position corresponding to the connector 6123 provided on the light source housing 6 of the light source device 5 stored therein, and is connected to the connector 6123 . The connector 212 is connected to the power supply unit 8 (see FIG. 7 ), and supplies lamp power supplied by the power supply unit 8 to the connector 6123 .

The terminal portion 213 contacts the mounting portion 624 of the light source device 5 or the conduction member 64 mounted on the mounting portion 624 to detect the type of the light source device 5 , that is, the type of the light source 51 . The terminal unit 213 has a substrate 2131 provided near the position where the fan 72 is disposed in the light source housing unit 21 , and two spring switches 2132 provided on the substrate 2131 .

The substrate 2131 outputs a signal of a voltage level corresponding to the conduction state of the two spring switches 2132 to the control unit 9 .

The two spring switches 2132 are configured to be respectively provided at positions in contact with the substantially U-shaped front ends of the conduction member 64, and face in a direction opposite to the side on the substrate 2131 where the spring switches 2132 are provided (that is, A force is applied with respect to the Y direction of the mounting portion 624 . When the light source device 5 with the conduction member 64 attached to the mounting portion 624 is housed in the light source housing portion 21, when the spring switch 2132 is electrically connected to the conduction member 64 to be in the conduction state, output from the substrate 2131 to the The voltage level of the control unit 9 changes. On the other hand, when the light source device 5 without the conduction member 64 is housed, the spring switch 2132 does not enter the conduction state, and the voltage level output from the substrate 2131 to the control unit 9 does not change.

In this way, the voltage level output from the substrate 2131 to the control unit 9 changes depending on whether the conduction member 64 is mounted on the mounting portion 624 of the light source device 5. Therefore, the control unit 9 can obtain the voltage level to determine The type of light source 51 is discriminated.

Furthermore, as shown in FIG. 6 , the spring switch 2132 is in contact with the conduction member 64 at a position away from the light emitting portion 5111 that becomes high temperature in the light source device 5 . In other words, in the light source device 5 , the attaching portion 624 to which the conduction member 64 can be attached is provided at a position away from the light emitting portion 5111 . Moreover, this mounting portion 624 is also provided at a position away from the main reflector 52 which becomes relatively high temperature in the light source device 5 . In addition, as described above, this mounting portion 624 is provided at a position opposite to the side surface portion 6D (fourth surface portion 611D) on which the discharge port 613 for cooling the arc tube 511 is formed. Air out.

In this way, the mounting portion 624 is provided at a position where the influence of the heat of the light emitting portion 5111 of the light source device 5 and the main reflector 52 is small, that is, a position at a relatively low temperature in the light source device 5 . Position the spring switch 2132 accordingly.

In addition, although illustration is omitted in FIG. 6 , the light source housing portion 21 is further provided with a lid detection unit 214 and a light source detection unit 215 (see FIG. 7 together). Among these components, the cover detection unit 214 detects a cover member for closing the opening of the exterior case 2 in which the light source device 5 is accommodated in the light source storage unit 21 . In addition, the light source detection unit 215 detects the presence or absence of the light source device 5 in the light source housing unit 21 .

[Structure of power supply unit]

FIG. 7 is a block diagram showing the configurations of the power supply unit 8 and the control unit 9 .

The power supply unit 8 supplies power to each component of the projector 1 . Although not shown, the power supply unit 8 has: a primary power supply system that rectifies, smoothes, and boosts commercial AC current supplied from the outside via a power line; and a secondary power supply system that communicates with the projector. Each structural component of 1 transforms the electric power supplied from the primary power supply system accordingly, and supplies the electric power to the respective structural components.

[Structure of the control section]

The control unit 9 controls the operation of the projector 1 and includes a circuit board on which a CPU (Central Processing Unit: central processing unit) and a memory are mounted. For example, the control unit 9 causes the power supply unit 8 to drive the light source 51 in a driving method corresponding to the type of the light source 51 . In addition, as shown in FIG. 7 , the control unit 9 has: a storage unit 91 composed of a memory; It is realized by processing the programs stored in this memory.

The storage unit 91 stores programs and data necessary for the operation of the projector 1 . For example, the storage unit 91 stores lighting information associating the type of the light source 51 with the driving method (for example, driving waveform) of the light source 51 corresponding to the type.

The determination unit 92 performs various determination processes. For example, the determination unit 92 determines whether the cover member is attached to the exterior case 2 based on the detection result of the cover detection unit 214 , that is, determines whether the cover member closes the opening of the exterior case 2 that accommodates the light source device 5 . In addition, the determination unit 92 determines whether or not the light source device 5 is stored in the light source storage unit 21 based on the detection result of the light source detection unit 215 . Then, the determination unit 92 determines the type of the light source 51 based on the signal input from the terminal unit 213 when it determines that the opening of the exterior case 2 is closed by the cover member and the light source device 5 is accommodated in the light source storage unit 21 . Furthermore, in the present embodiment, since the voltage level of this signal is associated with the type of light source 51 , the determination unit 92 determines the type of light source 51 based on this voltage level.

The operation control unit 93 controls the operation of the projector 1 according to the type of the light source 51 determined by the determination unit 92 . For example, the operation control unit 93 refers to the storage unit 91 to acquire a driving method corresponding to the type of the light source 51 , and turns on the light source 51 based on the driving method.

According to the projector 1 of the present embodiment described above, there are the following effects.

The light source case 6 has an attachment portion 624 capable of attaching the conduction member 64 according to the type of the light source 51 . Accordingly, the control unit 9 can determine and acquire the type of the light source 51 based on the conduction states of the two spring switches 2132 provided at positions capable of electrically contacting the conduction member 64 . Therefore, the type of light source 51 can be identified based on the presence or absence of conduction member 64 .

In addition, even when the mounting portion 624 is deformed due to heat emitted from the light source 51, as long as the conduction member 64 can be electrically connected to the spring switch 2132, the light source 51 can be obtained from the conduction state of the spring switch 2132. Therefore, it is possible to suppress the difficulty in obtaining the type of the light source 51 due to the influence of the heat generated by the light source device 5 .

In addition, since the type of the light source 51 can be identified by the presence or absence of the conduction member 64 , it is not necessary to separately manufacture the light source case 6 according to the type of the light source 51 . That is, a common light source case 6 can be used. Therefore, the type of light source 51 can be easily identified.

The case 6 for the light source includes: a case body 61 in which the light source 51 is housed; The light source 51 is cooled.

In addition, since the mounting portion 624 is provided on the duct member 62, the mounting portion 624 can be disposed at a position away from the light source 51 that becomes hot, and deformation of the mounting portion 624 due to the heat emitted from the light source 51 can be suppressed. Condition. Therefore, the conduction member 64 can be stably attached to the attachment part 624, and the connection of the conduction member 64 and the spring switch 2132 can be ensured.

In addition, since air circulates inside the duct member 62 , the temperature of the duct member 62 is lower than that of the case main body 61 located closer to the light source 51 . By providing the attachment portion 624 on such a duct member 62, deformation of the attachment portion 624 due to heat can be suppressed. Therefore, the conduction member 64 can be stably attached to the attachment part 624, and this conduction member 64 can be brought into contact with the spring switch 2132 reliably.

One of the first duct portion 622 and the second duct portion 623 guides the air introduced into the interior of the duct member 62 through the inlet 621 to the lead in the case main body 61 according to the posture in which the projector 1 is installed, that is, the posture of the light source device 5 . The vertically upper part of the light-emitting part 5111 is cooled by the air from the vertically upper part of the light emitting part 5111 because air is circulated in the case body 61 through the opening. Therefore, the vertically upper portion of the light emitting unit 5111 can be effectively cooled, and the life of the light source 51 can be extended.

In addition, since the mounting portion 624 is provided at the end of the second duct portion 623 through which air flows, the temperature of the mounting portion 624 can be kept low. Therefore, deformation of the attachment portion 624 due to heat can be suppressed, and therefore, the conduction member 64 can be stably attached, and the contact between the conduction member 64 and the spring switch 2132 can be reliably performed.

In addition, the attachment portion 624 is provided at a position on the inlet 621 side of the second duct portion 623 of the duct member 62 . As a result, relatively low-temperature air (air outside the light source housing 6 ) flows through the portion of the duct member 62 where the mounting portion 624 is located, so that the temperature of the mounting portion 624 can be reliably kept low. Therefore, deformation of the mounting portion 624 due to heat can be reliably suppressed, and stable mounting of the conduction member 64 and contact between the conduction member 64 and the spring switch 2132 can be reliably performed.

Since the conduction member 64 is made of metal, deformation of the conduction member 64 due to heat can be suppressed. In addition, since the conduction member 64 has a plate shape, it is possible to suppress an increase in size of the light source device 5 due to the provision of the conduction member 64 .

The connector 6123 is provided on the side opposite to the Z direction from the attaching portion 624 on the side portion 6B intersecting the front portion 6E and the bottom portion 6C. Accordingly, the light source device 5 can be attached to the light source housing portion 21 , and the connector 6123 can be connected to the connector 212 provided in the light source housing portion 21 . Therefore, even if the light source device 5 is inserted and mounted in the light source housing portion 21 in the direction (Y direction) perpendicular to the Z direction, which is the traveling direction of emitted light, the type of the light source device 5 can be reliably acquired.

The terminal portion 213 provided in the light source housing portion 21 has two spring switches 2132 . The two spring switches 2132 are in contact with the conduction member 64 to conduct with each other. Accordingly, each spring switch 2132 can be pressed against the attaching portion 624 and the conduction member 64 attached to the attaching portion 624 by the urging force (elastic force) of each spring switch 2132 described above. Therefore, the conduction state and the non-conduction state of the two spring switches 2132 can be reliably switched according to the presence or absence of the conduction member 64 , and the control unit 9 can reliably and appropriately obtain the type of the light source 51 .

Projector 1 includes a determination unit 92 for determining the type of light source 51 based on the conduction state of spring switch 2132 , and an operation control unit 93 for controlling the operation of projector 1 based on the determination result of determination unit 92 . Accordingly, the operation control unit 93 can drive the light source 51 in a driving method corresponding to the type of the light source 51 . Therefore, in addition to improving the drive startability of the light source 51, it is also possible to achieve a longer life.

[the second embodiment]

Hereinafter, a second embodiment of the present invention will be described.

The projector of this embodiment has the same structure as the above-mentioned projector 1, but in this projector 1, the control unit 9 is turned on according to whether the two spring switches 2132 provided on the substrate 2131 are turned on by the conduction member 64. To determine the category of the light source 51. On the other hand, in the projector of this embodiment, the control unit not only determines the type of the light source based on whether or not the three spring switches provided on the substrate are in the ON state, but also determines the light source based on which spring switch is in the ON state. category. In this respect, the projector of the present embodiment is different from the projector 1 described above. In addition, in the following description, the same reference numerals are assigned to the same or substantially the same parts as those already described, and descriptions thereof will be omitted.

FIG. 8 is a diagram showing a spring switch 2132 provided on a substrate 2131A included in a terminal portion 213A included in the projector according to the present embodiment.

The projector according to this embodiment has the same structure and function as those of the projector 1 described above except that a terminal portion 213A is provided in the light source housing portion 21 instead of the terminal portion 213 . In addition, as shown in FIG. 8, the terminal portion 213A has a substrate 2131A provided with three spring switches 2132 (2132A, 2132B, 2132C) instead of the substrate 2131 provided with two spring switches 2132, and has the same terminal portion 213 as described above. Same structure and function.

The substrate 2131A outputs signals of voltage levels corresponding to the conduction states of the three spring switches 2132A to 2132C to the control unit 9 . Specifically, when each of the spring switches 2132A to 2132C is not in the ON state and when two of the three spring switches 2132A to 2132C are in the ON state, the substrate 2131A outputs different voltage levels. Signal. In addition, when the spring switches 2132A and 2132B are brought into the conduction state by the conduction member 64A shown by the single-dashed line in FIG. When the spring switches 2132B and 2132C are turned on, and when the spring switches 2132A and 2132C are turned on by the conduction member 64C shown by a dotted line in FIG. 8 , signals of different voltage levels are respectively output. . Furthermore, each of the conduction members 64A to 64C has the same structure as that of the conduction member 64 described above.

On the other hand, depending on the type of the light source 51 housed inside, none of the conduction members 64A to 64C or any of the conduction members 64A to 64C is attached to the attaching portion 624 .

Furthermore, the determination unit 92 constituting the control unit 9 determines the type of the light source 51 based on the voltage level of the signal input from the substrate 2131A, and the operation control unit 93 controls the operation of the projector 1 based on the type of the light source 51 determined by the determination unit 92 . action.

According to the projector of the present embodiment described above, in addition to the same effects as those of the projector 1 described above, the following effects can be obtained.

The conduction members 64A to 64C conduct conduction to two of the three spring switches 2132A to 2132C provided on the substrate 2131A. Corresponding to the categories, it is possible to increase the categories of the light sources 51 indicated when the conduction members 64A to 64C are provided. Therefore, the types of the plurality of light sources 51 can be represented with a simple structure.

[modified example]

The present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the range in which the object of the present invention can be achieved are naturally included in the present invention.

In each of the above-described embodiments, one mounting portion 624 is provided on the light source device 5, but the present invention is not limited thereto. That is, the number of mounting portions 624 may be appropriately set, and at least two spring switches 2132 may be provided in each light source housing portion 21 according to the number of mounting portions 624 . Also, the number of detectable types of light sources 51 can be increased according to the number of mounting parts 624 .

In the above first embodiment, two spring switches 2132 are provided on the substrate 2131, and in the above second embodiment, three spring switches 2132 are provided on the substrate 2131A, but the present invention is not limited thereto. For example, four or more spring switches may be provided on the substrate 2131, and the voltage level of a signal output by conducting two spring switches among the four or more spring switches 2132 with the conduction member 64 may be configured. level, to determine the type of light source 51. Alternatively, three or more spring switches 2132 may be in contact with the conduction member 64 at the same time.

In each of the above-described embodiments, the spring switches 2132 provided in the light source housing portion 21 are arranged along the Z direction, and are arranged at predetermined intervals from each other in the Z direction. However, the present invention is not limited thereto. For example, each spring switch 2132 may be lined up in the X direction and arranged at predetermined intervals from each other in the X direction. In this case, regardless of whether the light source device 5 is inserted into the light source housing part 21 from the side of the bottom surface part 6C in the direction opposite to the Y direction for installation, or whether the light source device 5 is inserted into the light source housing part 21 from the side of the front part 6E in the Z direction 21 and 21, the conduction members 64 (64A to 64C) can be easily brought into contact with the corresponding two spring switches 2132.

In each of the above-mentioned embodiments, the mounting portion 624 is provided on the second duct portion 623, but the present invention is not limited thereto. For example, the attachment portion 624 may be provided on the first duct portion 622 , and the position of the attachment portion 624 may not be on the side of the inlet 621 on the duct member 62 . In addition, the attachment portion 624 may be provided not on the duct member 62 but on the casing main body 61 . At this time, as long as the position is far away from the light emitting part 5111, the mounting part can be made less susceptible to the heat generated by the light emitting part 5111, and as long as it is not on the back side of the main reflector 52 (cold mirror) (with the The side opposite to the reflective surface 5221) can be less susceptible to the influence of ultraviolet rays and infrared rays. In addition, when a duct is formed in the case main body 61, the mounting part 624 may be provided in the duct.

In each of the above-described embodiments, the connector 6123 as the connecting portion is provided on the side surface portion 6B including the second surface portion 612B. However, the present invention is not limited thereto. That is, the installation position of the connector 6123 may be any surface of the light source housing 6 . For example, the connector 6123 may be provided on the bottom portion 6C of the light source housing 6 . In this case, regardless of whether the light source device 5 is inserted into the light source housing portion 21 from the side of the bottom portion 6C and mounted in the direction opposite to the Y direction (the above-mentioned first mounting method), or whether it is inserted into the light source housing portion 21 from the side surface portion 6B side in the X direction, When the light source device 5 is inserted into the light source accommodating part 21 and installed (the above-mentioned second installation method), and when the light source device 5 is inserted and installed in the light source accommodating part 21 from the side surface part 6D side in the direction opposite to the X direction (the above-mentioned second installation method) 2 mounting method), or in the case of inserting the light source device 5 into the light source housing portion 21 from the front side 6E side along the Z direction for mounting (the third mounting method), the connector 6123 can be easily connected with the light source housing. The connector 212 at the bottom of the part 21 is connected.

In addition, the connector 6123 may not be located on the side opposite to the Z direction (light emission direction) with respect to the attachment part 624, and may be located on the Z direction side.

In each of the above-mentioned embodiments, although the conduction member 64 is made of a plate-shaped metal member, the present invention is not limited thereto, as long as the two spring switches 2132 are electrically contacted to make the two spring switches 2132 conductive. The members in the open state may also be members of other shapes, and members formed of other materials may also be used. For example, the conductive member may be formed of a metal wire or metal foil, or may be formed by coating a conductive resin or the like. In addition, as long as the conduction member has a resistance, the voltage value of the current flowing between the two spring switches 2132 via the resistance will change, so the control unit 9 can perform more detailed control based on the voltage value. Get the type of light source.

In each of the above-mentioned embodiments, the terminal portion 213 has the spring switch 2132, but the present invention is not limited thereto. That is, as long as the switch can change from the non-conduction state to the conduction state by contacting the conduction member 64 attached to the mounting portion 624 , other configurations may be used.

In each of the above-described embodiments, the operation control unit 93 drives the light source 51 in a driving method corresponding to the type of the light source 51 , but the present invention is not limited thereto. For example, when the temperature at the time of driving light source 51 differs depending on the type, cooling device 7 (especially fans 72 and 73 ) may be driven in a driving method corresponding to the type of light source 51 . In addition, when the wavelength characteristic of light emitted from light source 51 differs depending on the type, the driving state of liquid crystal panel 442 as the light modulation device may be changed according to the type of light source 51 . That is, it is only necessary to control the operation of the projector according to the type of light source 51 .

In each of the above-described embodiments, the terminal units 213 and 213A output to the control unit 9 signals having different voltage levels when the two spring switches 2132 are in the conduction state and in the non-conduction state, but the present invention does not Not limited to this. That is, as long as the control unit 9 can ascertain whether the two spring switches 2132 are in the conduction state or the non-conduction state, the contents of the signals output from the terminal units 213 and 213A can be appropriately changed.

In each of the above-described embodiments, when determining that the opening of the exterior case 2 is closed by the cover member and the light source device 5 is accommodated in the light source housing 21 , the determination unit 92 determines the light source based on the signal input from the terminal unit 213 . 51 categories. However, the present invention is not limited thereto. For example, when the closure of the opening of the exterior case 2 is not detected but only the storage of the light source device 5 in the light source accommodating portion 21 is detected, the determining unit 92 may be configured to determine whether the light source 51 is closed based on the input signal. category. That is, the electronic device only needs to have a structure in which the determination unit 92 determines the type of the light source 51 based on the signal input from the terminal unit 213 .

In each of the above-mentioned embodiments, the flow dividing member is provided in the duct member 62 to divide the air introduced into the interior from the inlet port 621. Holes are formed in the flow dividing member to guide air to the first duct part 622 and the second duct part 623 respectively, but the present invention is not limited thereto. For example, a configuration may be adopted in which the air is guided to the vertically upper duct portion of the first duct portion 622 and the second duct portion 623 without forming a hole in the flow dividing member. In addition, the flow distribution member is not limited to a plate-shaped member that rotates by its own weight, and may have a structure that slides and moves. In addition, there may be no branching member.

In each of the above-mentioned embodiments, the optical unit 4 has been described as having a substantially L-shape in plan view, but the present invention is not limited thereto. For example, it may have a substantially U-shape in plan view.

In each of the above-described embodiments, the projector 1 includes the three liquid crystal panels 442 (442R, 442G, and 442B), but the present invention is not limited thereto. That is, the present invention can also be applied to a projector using two or less or four or more liquid crystal panels.

In each of the above-mentioned embodiments, a transmissive liquid crystal panel 442 having a different light entrance surface and a light exit surface is used, but a reflective liquid crystal panel with the same light entrance surface and light exit surface may also be used. In addition, as long as it is a light modulation device capable of modulating an incident light beam to form an image corresponding to image information, a device using a micromirror, such as a DMD (Digital Micromirror Device: Digital Micromirror Device) or other light modulation device can also be used. etc., light modulation devices other than liquid crystals.

In each of the above-mentioned embodiments, a front type projector in which the projection direction of the image is substantially the same as the observation direction of the image was exemplified, but the present invention is not limited thereto. For example, it can also be applied to a rear type projector in which the projection direction and the observation direction are directions opposite to each other.

In each of the above-described embodiments, an example in which the light source device 5 is employed in the projector 1 was given, but the present invention is not limited thereto. That is, the light source device 5 may also be employed as a lighting device.

Label description

1: projector; 2: exterior casing; 5: light source device; 6: light source casing; 6B: side part; 6C: bottom part; 6D: side part; 6E: front part; 21: light source storage part; 45 : Projection optical device; 51: Light source, 61: Housing main body; 62: Pipe part, 64 (64A, 64B, 64C): conduction part; 92: Judgment part; 93: Action control part; 213, 213A: Terminal part ; 442 (442B, 442G, 442R): liquid crystal panel (light modulation device); 621: inlet port; 622: first duct part; 623: second duct part; 624: installation part; 611B: second face (side surface) ; 2132 (2132A, 2132B, 2132C): spring switch; 6123: connector (connection part).

Claims (9)

1. a light supply apparatus, it is characterised in that

Described light supply apparatus possesses:

Light source, it penetrates light；With

Light source housing, it is at the described light source of inside storage,

Described light source housing has installation portion on the surface of this light source housing, and this installation portion can be installed has conduction The conductive member of property,

Described conductive member is installed on described installation portion according to the classification of described light source,

Described conductive member is the metal parts of tabular.

Light supply apparatus the most according to claim 1, it is characterised in that

Described light source housing has:

Housing body, it receives described light source in inside；With

Conduit component, it is installed in described housing body, draws the air being imported in described housing body Lead,

Described installation portion is arranged on described conduit component.

Light supply apparatus the most according to claim 2, it is characterised in that

Described conduit component has:

Introducing port, described air is imported to the inside of this conduit component by it；

1st pipe section, the described air imported from described introducing port is guided the vertical direction to described housing body by it Side；And

2nd pipe section, the described air imported from described introducing port is guided the vertical direction to described housing body by it Opposite side,

Described installation portion is arranged on the side in described 1st pipe section and described 2nd pipe section.

Light supply apparatus the most according to claim 3, it is characterised in that

The position of the described introducing port side that described installation portion is arranged on described conduit component.

5. according to the light supply apparatus described in any one in Claims 1 to 4, it is characterised in that

Described light source housing possesses connecting portion, the power supply extremely described light source that this connecting portion will be supplied,

Described connecting portion be configured in installation portion described in the bottom surface sections of described light source housing and the ratio of side surface part near with Optional position in the position penetrating side in opposite direction of the light of described light source housing, described side surface part is in institute State on light source housing face portion with described bottom surface sections and injection light respectively to intersect.

6. a projector, it is characterised in that

Described projector has:

The light supply apparatus described in any one in Claims 1 to 5；

Optic modulating device, the light penetrated from described light supply apparatus is modulated by it；

Projecting optical device, the light after utilizing the modulation of described optic modulating device is projected by it；

External shell, it receives described light supply apparatus, described optic modulating device and described projecting optical device in inside；

Light source incorporating section, it is arranged in described external shell, and detachably receives described light supply apparatus；With And

Portion of terminal, what it was configured in described external shell fills with the described light source being accommodated in described light source incorporating section The position that the described installation portion put is corresponding, and make electrical contact with the described conductive member being installed on this installation portion and turn on.

Projector the most according to claim 6, it is characterised in that

Described portion of terminal has multiple snap switch, and the plurality of snap switch contacts and phase mutual conductance with described conductive member Logical.

Projector the most according to claim 7, it is characterised in that

The plurality of snap switch includes at least 3 snap switches,

Described conductive member contacts with 2 snap switches in described at least 3 snap switches and makes these 2 springs open Close conducting.

9. according to the projector described in any one in claim 6～8, it is characterised in that

Described projector has:

Detection unit, its conducting state based on described portion of terminal judges the classification of described light source；With

Operation control part, it controls the action of this projector according to the result of determination of described detection unit.